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Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor
Recently, an acoustic waveguide sensor based on multiple mode conversion of surface acoustic waves at the solid—liquid interfaces has been introduced for the concentration measurement of binary and ternary mixtures, liquid level sensing, investigation of spatial inhomogenities or bubble detection. I...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International (MDPI)
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3658713/ https://www.ncbi.nlm.nih.gov/pubmed/23447010 http://dx.doi.org/10.3390/s130302777 |
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author | Schmitt, Martin Olfert, Sergei Rautenberg, Jens Lindner, Gerhard Henning, Bernd Reindl, Leonhard Michael |
author_facet | Schmitt, Martin Olfert, Sergei Rautenberg, Jens Lindner, Gerhard Henning, Bernd Reindl, Leonhard Michael |
author_sort | Schmitt, Martin |
collection | PubMed |
description | Recently, an acoustic waveguide sensor based on multiple mode conversion of surface acoustic waves at the solid—liquid interfaces has been introduced for the concentration measurement of binary and ternary mixtures, liquid level sensing, investigation of spatial inhomogenities or bubble detection. In this contribution the sound wave propagation within this acoustic waveguide sensor is visualized by Schlieren imaging for continuous and burst operation the first time. In the acoustic waveguide the antisymmetrical zero order Lamb wave mode is excited by a single phase transducer of 1 MHz on thin glass plates of 1 mm thickness. By contact to the investigated liquid Lamb waves propagating on the first plate emit pressure waves into the adjacent liquid, which excites Lamb waves on the second plate, what again causes pressure waves traveling inside the liquid back to the first plate and so on. The Schlieren images prove this multi reflection within the acoustic waveguide, which confirms former considerations and calculations based on the receiver signal. With this knowledge the sensor concepts with the acoustic waveguide sensor can be interpreted in a better manner. |
format | Online Article Text |
id | pubmed-3658713 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Molecular Diversity Preservation International (MDPI) |
record_format | MEDLINE/PubMed |
spelling | pubmed-36587132013-05-30 Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor Schmitt, Martin Olfert, Sergei Rautenberg, Jens Lindner, Gerhard Henning, Bernd Reindl, Leonhard Michael Sensors (Basel) Article Recently, an acoustic waveguide sensor based on multiple mode conversion of surface acoustic waves at the solid—liquid interfaces has been introduced for the concentration measurement of binary and ternary mixtures, liquid level sensing, investigation of spatial inhomogenities or bubble detection. In this contribution the sound wave propagation within this acoustic waveguide sensor is visualized by Schlieren imaging for continuous and burst operation the first time. In the acoustic waveguide the antisymmetrical zero order Lamb wave mode is excited by a single phase transducer of 1 MHz on thin glass plates of 1 mm thickness. By contact to the investigated liquid Lamb waves propagating on the first plate emit pressure waves into the adjacent liquid, which excites Lamb waves on the second plate, what again causes pressure waves traveling inside the liquid back to the first plate and so on. The Schlieren images prove this multi reflection within the acoustic waveguide, which confirms former considerations and calculations based on the receiver signal. With this knowledge the sensor concepts with the acoustic waveguide sensor can be interpreted in a better manner. Molecular Diversity Preservation International (MDPI) 2013-02-27 /pmc/articles/PMC3658713/ /pubmed/23447010 http://dx.doi.org/10.3390/s130302777 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Schmitt, Martin Olfert, Sergei Rautenberg, Jens Lindner, Gerhard Henning, Bernd Reindl, Leonhard Michael Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor |
title | Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor |
title_full | Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor |
title_fullStr | Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor |
title_full_unstemmed | Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor |
title_short | Multi Reflection of Lamb Wave Emission in an Acoustic Waveguide Sensor |
title_sort | multi reflection of lamb wave emission in an acoustic waveguide sensor |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3658713/ https://www.ncbi.nlm.nih.gov/pubmed/23447010 http://dx.doi.org/10.3390/s130302777 |
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